His backache is only _________ for not watering the flowers.

We are living a_____

Are you _________ your classmates well?

His whole school education ________ only 2 years because of his illness.

This is the first time that I_________ at the meeting.

He came into the classroom_________.

It's seven thirty. I_________ go to school.

Will it be_____ before the professor returns ?

—Would you mind my sitting here ?

— ______ .

Only 5 _____ of the population of America _____ farmers .